Gas pressure regulating and mixing valve.



G. CORNELIUS.

GAS PRESSURE REG ULATING AND MIXING VALVE. APPLICATION FILED APR. 7,1916- mzspssq Patented June 5, i917.

I GAS PRESSURE REGULATING AND MIXING VALVE.

Application filed April 7, 1916.

To all whom it may concern:

Be it known that I, CLYDE CORNELIUS, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Gas Pressure Regulating and Mixing Valves, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to improvements in gas pressure regulating and mixing valves, the primary object of which is to so con struct such a device that it may be used either for natural or artificial gas, and is especially adapted for use where either of said gases vary in pressure.

Another object of the present improvement is to construct such a device that both 26 the gas and air discharging orifices are adjustable and in which each orifice may be set or adjusted independent of the other.

A further object of this invention is to devise a valve for the gas which does not break up the main pressure, but causes it to cushion in the interior of the valve and be discharged at any desired pressure or at full main pressure.

A still further object of the present inven tion is to so construct the device that it is of simple construction, easy to operate, durable, and can be manufactured to sell at a small price.

Other objects and advantages of the invention will be set forth in detail in the accompanying description and drawings, in which- Figure 1 is a perspective View of my improved gas valve and mixer in operation. as Fig. 2 is a vertical sectional view of the valve and mixer.

Fig. 3 is a horizontal sectional view through the core of the valve showing the plurality of orifices therein.

Fig. 4- is a fragmentary disassembled perspective view of the end of the core and the means for holding it within the casing.

Fig. 5 is a fragmental vertical sectional view, taken on the line 5-5 of Fig. 2, and so looking in the direction of the arrow.

Referring now to the drawings in detail in which like reference numerals designate similar parts, 1 represents the body portion or casing of the valve having a tapered 5.5 Opening 2 rough it nter is reee e a Specification of Letters Patent.

Patented June 5, 1917.

Serial No. 89,633.

revoluble tapered core 3. The casing 1 is provided with projections 4: and 5 at right angles to the core 3, provided with passages 6 and 7 adapted to be thrown into communication with each other by the core 3, as will be hereinafter set forth. The projection 1 is provided with internal screw threads 8 to receive the threaded end of a pipe 9, communicating with the gas main (not shown). The other projection 5 is provided with external screw threads 10, upon which is threaded the air mixing attachment, hereinafter to be described. x

In pressure regulating and mixing valves heretofore used for the feeding of gas to furnaces and gas ranges, there has been considerable diiiiculty experienced where the valve was constructed with tortuous passages and a multiplicity of movable parts. By my improvement I intend to introduce a full amount of pressure into the valve casing and there pocket it when the valve is closed. With this object in view, the core 3 is provided at its center with a chamber 11. One side of the core is provided with three openings 12, 13 andl l, the opening 13 be ing arranged opposite the center of the core; the openings 12 and 14 being spaced equidistant from the opening 13. Each of these openings at all times communicate with the interior chamber 11 and are adapted to be thrown successively into communication with the pipe 9, through the extension 4 of the valve casing. Directly opposite the openings 12, 13 and 14 are three openings 15, 16 and 17. The opening 16 is arranged directly opposite the center of the core, while the openings 15 and 17 are arranged on each side and equi-distant the opening 16. The openings 15, 16 and 17 are of graduated sizes, the opening 15 being the smallest and the opening 17 the largest. The openings 12, 13, 16 and 17 are arranged in the same plane, while the openings 14 and 15 are arranged in a plane below the plane occupied by the other openings. It is to be understood, of course, that theopenings 12, 13 and 1 1 may all be arranged in stepped position, or in any position on one side of the core, but must, of course, be so spaced that they can be brought into communication with the pipe 9. The openings 15, 16 and 17 may also be arranged in any position so that they may be brou ht into communication with the xtensio 1 a ls r gis er with their respective openings on the opposite side of the core. The openings 15, 16 and 17 areflatall times in com1nun1cat1on with the chamber 11 and are adapted to be thrown successively into communication with the extenslon 5 of the valve casing and thereby convey gas through the air-mixing one opening on each side of the core to communicate with the passages 6 and 7. Since the openlngs through the core 3 are arranged in pairs only one pair of openings at a time can pass as through the core 11 and passages 6 andv By referring to Fig. 3, it is clearly seen that the openings 12 and 17 will register at the same time; 14 and 15 registering at the same time and '13 and 16 registering simultaneously, the registering openings serving 'at different times o to throw the pipe into communication with the air mixing device.

The, core 3 is revolved by means of a handle 18 having a squaredopening 19, fit-' ting on the squared end 20 of the core 3'. The lower end of the core where it projects be yond the end of the casing 2, is formed with a shoulder 21 having a squared portion 22 and a screw-threaded extension 23. A washer 24, having a squared portion 25 to fit the squared portion 22 is fitted on the shoulder 21 and fastened by means of'a nut 26. In this way the. turning movement of the core occurs between the end of the easing 1 and the washer 24;. The handle 18 is provided with an extension 27 on one side which forms a pointer to indicate when the various openings in the core are passing gas through the valve. In order to accomplish this purpose, markers 28 are provided on a plate 29 cast on the upper end of the valve casing 1. Stops 30 and 31 are also provided at the ends of the plate 29 to limit the move ment of the handle. When the handle is in the position'shown in Fig. 1, none of the openings register with the pipe9 and come quently the valveis closed and no gas is flowing therethrough. hen the marker 27 is opposite the firstmark on the plate 29, the openings 14 and 15 are thrown into communication with the pipe 9 and the extension 5 yrwhenopposite the second inarkon the plate 29, theopenings 13 and 16 are in communication and when the marker 27 reaches the stop 31, the openings '12 and 17 are thrown in communication. It

is to be understood that due to the central chamber 11 the core 3, suflicient gas is pocketed therein so that as the handle 18 is turned to register, first one orifice and then the other, the flame at the burner will not be 7 V extinguished, but will burn at all times as the handle 18 is moved over the diflerent orifices.

The air mixing. device which is used in cooperation with my improved 'valve, heretofo're described, .coinprises a body-portion consisting of a pipe 32 having one end outwardly flared forming a conicalshaped portion 33 across the outer face'of which is formed a web consisting of arms 34:, which carry at their ends a collar 35 internally screwathreaded meshing with external screw threads 10 on the extension A pipe 36 fits within the pipe portion 32 andthis pipe'36 conveys the mixed gas and air to the burners of either a furnace or burners of a gas range. The body portion of the air mixing device may be adjusted in or out by virtue of the collar 35s'crewing in and out on the screw threads formed on the extension 5. lVhen the collar 35 is screwed in toward the valve casing as far as the screw-threads permit, the passage of air into the conical portion 33, will be small for the reason that the space between the extension 7 and the inner face of the flared portion 33 is slight, as is shown in Fig. 2. However, when the [collar 35 is screwed outwardly as far as the screw threads permit a large space will left between the inner end of the extension 5 and the inner face of the'conical-s'haped portion 33. In this way the air fed into the pipe 36 may be varied by varying the distance between the inner end of the extension 5 and the adjacent face of the conical portion 33. The body-portion of the mixing device is held at any adjusted position by means of set screw 37 which impinges against the pipe 36.

It'is well known to those skilled in this art that great difficulty is experienced when operating furnaces and stoves, due to the fact that the pressure in the mains oftentimes changes and the gas and air fed to the burners consequently varies. Wherevalves are used having a constant intake and outlet the amount of air or gas cannot be so mixed as to compensate for the difference in pressure. This is specially true where it has been attempted to use the same character of valve for burningbothartificial or natural gas, since it requires different mixtures of air for perfect combustion. In order to accomplish this the present invention is so constructed that 'it can operate with either natural or artificial gas, or can properly mix the gas and airwhether the pressure be low or high. For instance, should the pressure in thecmain pipe be high, the core of my valve: would be turned so that the openings 1 1 and 15 are thrown into communication with the pipe 9 to feed. the gasrmm the 1st said pipe through the air mixing device and into the pipe 36. After the valve has been turned to the right position, the conical portion 33 of the air mixer may then be moved in or out until the flame at the burner reaches the desired heat or perfect combustion. When the combustion is perfect the conical portion 33 is locked by means of the set screw and the apparatus need not again be touched until the pressure varies. Should the pressure become less, the same operation would then take place and the core would be turned until the next largest opening 16 should be thrown into communication with the gas main. Should the pressure be very low, the largest opening 17 would be thrown into communication with the gas main and the full pressure allowed to pass through the valve with little cushioning eifect. It is particularly pointed out that the openings which pass the gas from the main into the inner chamber 11 where it is pocketed are constant, while the openings which discharge the gas from the inner chamber into the air mixing device are of various sizes and the adjustment of the gas is accomplished at this point.

hen the device is to be used with natural gas due to the plurality of different sized discharge openings and the adjustableness of the air supply the best combustion may be accomplished and the device set in its adjusted position. In this way the same device may be used either for natural gas or artificial gas. It is also noted that either the gas regulating portion of the valve or the air regulating portion may be moved independent of the other and set in any position. Due to this construction the gas supply may be set at one place and the best combustion obtained through varying the air which would not be possible were both moving together and would be more difficult should they both move together though adjustable one independent of the other.

It is also to be understood that this mixing valve may be used with any gas burning device where a blue flame is desired, and is readily applicable to gas ranges, heaters and gas burning stoves of any construction.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. A gas and air mixing valve comprising a body portion, a revoluble core mounted therein, a gas outlet passage and a gas inlet passage adapted to be thrown into and out of communication by the core, the said core having a plurality of openings of diflerent sizes therethrough, said openings arranged in pairs on opposite sides of the core, the body portion provided with restricted openings adjacent the core, whereby only one pair at a time can register with the inlet and outlet passages in the body portion.

2. A gas and air mixing valve comprising a a body portion, a revoluble core mounted therein, a gas outlet passage, and an inlet passage adapted to be thrown into and out of communication by the core, the said core having a plurality of openings of the same size on one side thereof and a plurality of openings of different sizes on the other side thereof, said openings also arranged in pairs, each pair comprising a uniform size opening and a variated size opening, the body portion provided with restricted openings adjacent the core, whereby only one pair at-a time can register with the inlet and outlet passages in the body-portion.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

CLYDE CORNELIUS. Witnesses:

THos. M. Born, Jr., H. G. TINKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

